25631614652 has 24 divisors (see below), whose sum is σ = 51733540320. Its totient is φ = 10884196800.

The previous prime is 25631614639. The next prime is 25631614661. The reversal of 25631614652 is 25641613652.

It is a happy number.

It is a super-2 number, since 2×25631614652² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4196099 + ... + 4202202.

It is an arithmetic number, because the mean of its divisors is an integer number (2155564180).

Almost surely, 2^25631614652 is an apocalyptic number.

It is an amenable number.

25631614652 is an abundant number, since it is smaller than the sum of its proper divisors (26101925668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25631614652 is a wasteful number, since it uses less digits than its factorization.

25631614652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8398421 (or 8398419 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The spelling of 25631614652 in words is "twenty-five billion, six hundred thirty-one million, six hundred fourteen thousand, six hundred fifty-two".